Pentstemon. SCROPIIULARIACEJC. 561 



* •-;■- Leaves entire : corolla purple or blue. 



+- Corolla rathei- slender, half an inch or so long : sterile filament cojnmonli/ a little 

 bearded down one side. 

 19. P. gracilentus, (hay. A foot or moro liigli, up to the inflorescence gla- 

 brous : stems slender, lew-leaved and with long internode.s above, terminating in a 

 loose mostly naked and short panicle : leaves lanceolate, or the upper ones linear 

 and the lowest oblong: slender 2-6-llowered peduncles and short pedicels as well 

 as tlio calyx glandular-puhoscent : corolla bright violet-blun, tubular and gradually 

 broadening upwards; the lij)s (2 lines long) moderately siiroading, — Tacil". K. Kop. 

 vi. 82, & rroc. Am. Acad. vi. 75. 



Shaded ground or banks, througli tlie noitliern portion of the Sierra Nevada (Newberry An- 

 derson, &c.), and on Mt. Shasta above 8,000 feet, Brewer. 



+■ -t- Corolla larger and ventricose-dilaled above ; the broad lips widely spreading : 

 sterile filament glabrous : fiowers racemose-panicled, shotvi/. 



20. P. heterophyllus, Lindl. Glabrous or minutely lioary-puberulent, not 

 glandular, pale, and sometimes glaucous, sending up many virgate leafy stems, 2 to 

 5 feet high from a persistent woody base : leaves lanceolate or linear, or the lowest 

 oblong-lanceolate, the floral diminishing into narrow subulate bracts : peduncles 

 1 - 3-flowered, mostly short and erect : corolla pink or rose-purple, or with shades 

 of violet, fully an inch long, ventricose-funnelform above the narrow rather slender 

 base. — Bot. lleg. t. 1899; Bot. Mag. t. 3853. 



Dry banks of streams, through the western part of the State, from San Diego to Mendocino 

 Co. Tlie anthers, as ni all the following, are ciliate witli short and stiff bristles along the line 

 of openmg, and otherwise cither glabrous or sparsely hirsute underneath. All these are showy 

 species ; and they seem to run into one auotlier. The calyx is variable. 



21. P. azureus, Benth. Glabrous and glaucous, 1 to 3 feet high : leaves as in 

 the preceding, or inclined to be more lanceolate or with a broader base: corolla 

 similar, but azure-blue or approaching violet, sometimes with red-purple tube, 

 mostly rather broader and larger. — ]M. Ilartw. 327 ; Gray, I'roc. 1. c. vi. 75. 



Var. Jaflfrayanus, Gray. A foot high : leaves broader ; the lower spatulate- 

 ol)]ong, tho upper from oblong-lanceolato to ovate. — P. glancifolins, Gray in Pacif. 

 K ]{op. vi. 82. P. JaJ'rai/anus, Hook. Jiot. Mag. t. 5045. 'j\ hderoplu/llus, var 

 lati/olins, Wataon, Bot. King Kxi). 222. 



Common through the interior, from tho Sacramento Valley eastward : the vanetv in the Sierra 

 Nevada ; also m the Wahsatch Mountains of Utah. 



22. P. laetus, Gray. Cinereoiis-puberulent or pubescent and above glandular 

 a foot high : leaves from lanceolate to linear or below to spatulate • panicle more 

 open; tho peduncles and pedicels often spreading: corolla as of the preceding or 

 smaller, an inch long, blue.— Jour. Bost. Nat. Hist. Soc. vii. 147 c^- Proc Am 

 Acad. vi. 76. , . . 



Near I.os Angeles ( ll^allacc) and Tejon {Xa7itiis) to the Sierra above tho Yosemite Valley, &c. 



23. P. Roezli, Pegel. Smaller, a span to a foot or so high, below glabrous or 

 minutely puberulent, above (at least the inflorescence) glandular-pubescent • leaves 

 all lanceolate or linear (an inch or more long) : panicle open and often compound ; 

 the few-flowered or loosely several-flowered peduncles and tho jiedicels commonly 

 diverging : corolla from half to two thirds of an inch long, bluish or pale violet — 

 Kogol in Proc. St. T^etersb. Bot. Gard. ii. 320. P. heterophyllus, var. (?), Terr. & 

 (Jray in Pacif. Ii. \h^\). ii. 122. ' 



Higher Sierra Nevada, in Nevada nnd RleiTa counties, IlrrhHth, Lnnnwu, kc. Also Wafihoo 

 Valloy, Nevada, Sfrdcli, kc. |{oH(.uil)IeH a reduced form of /'. UvIh!,, but moro glahrons, and tho 

 owors much smaller, i^ogol Ihids occasionally some scattered hairs on the sterile fdnmont' wo 

 lind none. 



